Home / 1,819.78-2,711.36-1,801.57

Finding the Fourth Proportional to 1,819.78, 2,711.36 and 1,801.57

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Solution

The fourth proportional to 1,819.78, 2,711.36 and 1,801.57 is: 2,684.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,819.78 : 2,711.36 = 1,801.57 : x
  2. Step 2: Convert to fraction form
    1,819.78/2,711.36 = 1,801.57/x
  3. Step 3: Cross multiply
    1,819.78x = 2,711.36 × 1,801.57
  4. Step 4: Simplify right side
    1,819.78x = 4,884,704.84
  5. Step 5: Solve for x
    x = 4,884,704.84/1,819.78
  6. Step 6: Final answer
    x = 2,684.23

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.